Surname Kopustinskas (Kopustinskas 
) , in the world, is a very rare cognomen. The last name Kopustinskas is habitual in Northern Europe, particularly Lithuania, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kopustinskas | Lithuania, United Kingdom |
| audris kopustinskas LT (b. 1945) |
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| vytis kopustinskas Ph.D. Vytauto Didžiojo Universitetas 2001 |
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| povilas kopustinskas |
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